Instead of measuring simply by putting the ruler against an object and using your eyes, you instead have to move a physical indicator along the length of the ruler, along a channel.
NeoRuler and M-Cube review: Smarter, iPhone-connected precision measuring NeoRuler review: The NeoRuler and M-Cube.
Hozo Design has a pair of digital measuring devices in the NeoRuler and M-Cube, with both having the goal of making both micro and macro measurements more precise and easier to accomplish.
That display is a 1.14-inch color LCD, with a resolution of 240 by 135, and a pixel density of 240 pixels per inch.
The NeoRuler is basically a considerable expansion of the concept of the ruler.
